To conduct an in-depth analysis of the biomechanical differences between high-flexion and conventional knee prostheses, providing references for optimizing prosthetic design and enhancing clinical outcomes.

Finite element analysis (FEA) was employed to investigate the mechanical disparities between high-flexion and conventional femoral component prostheses. 3D models of the femoral condyle and tibial insert were constructed and comprehensively analyzed in ANSYS. The contact area, maximum contact stress, and peak von Mises stress were compared under identical rotation centers at flexion angles of 0°, 15°, 30°, 60°, 90°, 120°, 135°, and 150°.

The study revealed comparable mechanical performance between high-flexion and conventional prostheses at flexion angles below 90°. However, in high-flexion regimes beyond 120°, the high-flexion prosthesis demonstrated superior performance in simulations, exhibiting larger contact areas and lower contact stresses, demonstrating the efficacy of its design.

The methodology and findings of this study provide valuable insights for the design and manufacturing of high-flexion knee prostheses.